Furnace.



W. J. DOYLE & J. J. WOLLENHAUPT.

FURNACE.

APPLICATION FILED MAR. 23, 1914.

l 9 1L 33.8%fi. Patented Mar. 23, 1915.

3 SHEETB-SHEET 1.

W. L DOYLE & J. J. WOLLENHAUPT.

FURNACE. APPLICATION iILFD MAR. 28, 1914' 1 1 Patented Mar. 23, 1915.

3 SHEETSSHEET 2.

u mllllHll W. J. DOYLE & J. J. WOLLBNHAUPT.

FURNACE.

APPLICATION FILED MAR.23, 1914.

mwmmo Patented Mar. 2& 1915.

3 SHEETS-SHEET 3.

.ann 1ft;

WILLIAM J. DOYLE AND JUSTUS (I. WOLLENHATJ'PT,-OF CINCINNATI, OHIO, ASSIGNORS TO THE MONITOR STOVE & RANGE COMPANY, OF CINCINNATI, OHIO, A CORPORA- TION OF OHIO.

FURNACE.

Specification oi Letters Patent.

Patented Mar. 23, 19115.

Application filed March 23, 1914.. Serial No. 826,801.

To all wlzom it may concern Be it known'that we, WILLIAM J. Dom and JUs'rUs J. WOLLENHAUTT, citizens of the United States, and residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Furnace, of which the following specification is a full disclosure.

The invention relates to furnaces of the hot-air conductor type, in which cold-air and hot-air ducts have coincident terminals above the heater.

An object of the invention is to provide a furnace in which the heater is surrounded by two chambers intercommunicable at the base, the one an outer, providing a cold-air chamber, and the second an inner providing ahot-air chamber. The casing forming the outer member has a rigid heater face plate contiguous with its ing a terminal for the projecting heater passages and supports the doors therefor. A second casing concentrically within the first, forms the inner or hot air chamber, has an oflset portion connecting with the face plate of the outer casing, providing an area-way for the projecting heater passages, with the base edge of said casing superposed from the furnace base for offering communication between said cylinders.

There are various other objects and features of our invention some of which relate to structural details, all of which will be more fully defined in detail in the following description of the annexed drawings illustrating a preferred embodiment of the in vention, and forming a part of this disclosure, and in such drawings like characters of reference denote corresponding parts throughout the several views of which Figure 1 list a central vertical section through our improved furnace, illustrating the heater in elevation. Fig. 2 is a section on line 2 2, Fig. 1. Figs. 3, 4t and 5 are perspective views illustrating details of the furnace, namely the front face plate, inner casing and top plate connecting the inner casing and face plate. Fig. 6 is a section on line 6*6, Fig. 1. -Fig. 7 is an enlarged section on line 7-7, Fi 6. Fig. 8 is an enlarged detailed sectiona ,view of the plate connecting the upper portion of: the face plate with the inner casin As illustrated the furnace is of the well circumference providknown type wherein the heater is surrounded by casings constituting two chambers, the one a hot-air chamber for conducting the hot air upwardly, and the second a cold-air chamber for conducting the cold atmoshere downwardly, communicating with the ot-air chamber at the base thereof.

The heater may be of any well known construction and design, comprising the ashpit 1, fire-box 2, combustion chamber 3 and hot-air dome t, separably united in a manner well known in the art and commonly practised.

The heater in the disclosure herein is possessed of a distinguishing feature, in that the heater dome or radiator 4, has its axis disposed eccentrically to the axis of the firebox and combustion chamber, the purpose of which is to position the ash-pit, fire-box and combustion chamber forwardly relative to the surrounding casings, so as to reduce the length of the passages or hoppers 5 and 6, communicating respectively with the ashpit and combustion chamber. This places a portion of the heater, preferably the major portion thereof, eccentrically within the surrounding chambers, and the hot-air dome or radiator concentrically within the same, presenting a circumferential exterior and provides a greater cubic area for the hot-air chamber within the given circumferential area of the furnace. An apertured cast face plate 8 surrounds and is secured to the extremities of the passages 5 and 6, and provides a rigid front wall portion to which the casings surrounding the heater are secured, and contiguous with the outer casing. The face plate supports the doors for the passages and other fittings for the various ports leading into the furnace for clean-out or regulating purposes.

The heater is'supported upon a cast base 9 corresponding in outline with that of the from the sections. The T-links each proect 1n diametric planes with the heater, andare'secured to relatively projected lugs integral with the base member 9. Thus the metal casing 18 having its end provided with radial flanges 19, 20, terminating in the. fastening, margins 21, 22, respectively, for securing the same. to the face plate 8, providing an oifset in the chamber 17 as an area-way for the hoppers or passages of the heater connecting with the face plate. The casing, terminates at its lower portion approximately ata plane. coincident with the top wall of'the ash-hopper or passage, with the. lower margin of the casing reinforced by a beaded binding ring 23, having-a head 23" engaged with the edge of the casing. Theendsof the binding ring are secured to the,side walls of the ash-hopper. The casing beyond the frontface plate is supported by the, standards 24 resting and secured upon the links 13. It will be observed that thebase of the chamber 17 is open and cir-.

cumferentially in communication with the cold-air chamber 25 surrounding the casing 18 and formed by the sheet metal casing 26 having its endssecured to the face plate 8 coincidentally with the fastening margins 21, 22, respectively, of the inner casing 18.

27 represents a; cast plate; having front and, rear circular margins, the front margin abuttingly engaged againstthe. inner surface. of the face plate8 and secured thereto by a bolt'engaging through the offsets 27. The opposite or rear margin comprises a flange28 projected upwardly from the plate 27 andsecured to the lower edge of the top casing section 30,- which joins the top wall 33 of the offset portion of chamber 17. The casing section- 30 has a reduced diameter portion .providing a hot-air conductor 2.9 engaging with the register plate 32 which seats into or upon the floor above the furnace. The casingsection 30 may be united to the main portion of the casing 18 by a,b eaded ring or in any well known manner. The outer casing is also provided with a top casing section34, terminating in conduit or conductor 35 surrounding the conductor 29,

and engaged with theregister plate 82, providing a cold-air duct circumferentirlly around, the hot-air duct. The cold. air is drawndownwardly through the'chamber 25, and thenceupwardly aroundthe heater to be h'eatedin the chamber 17 and?di scharged throu h the conductor; 29. The register plate 2 representsa grating having a flange agj'projecting from its lower'snrface-to tele-s seopica'lly engagewith the col'd air con ductor 3'5, with margins-beyond the flange supporting the grating upon the floor above the furnace. A second fiangeprojectsfrom. the lower surface of the grating 32 as divisional of the hot and cold-airpassages which telescopically engage with the hot-air conductor 29. The grating, therefore, is of integral construction, serving for both con-. ductors.

Having described our invention, we claim 1. A furnace of the character described combining a heater having passages projected. therefrom, two concentric circumferential casings surrounding said heater providing two chambers communicating at their base, the outer casing having a rigid heater passage terminal plate circumferentially continuous therewith and the inner casing having an offset portion united to the margins of said plate providing an area-way for saidheater passages.

2. A furnace of the character described combining a heater having passages projected from itsvarious compartments, two concentric casin'gs surrounding said heater, providing two chamberscommunicating at,their base, said casings at their upper portions forming conductor passages for the chambers'respectively, onev to admit cold'air into the .outer chamber and the second for discharging the heated air from the inner chamber, the outer casing having a heater face late circumferentially continuous therewlth as a terminal for said heater passages and the inner casing having an offset portion united to the margins of the face plate providing an area-way for said heater passages.

3. A furnace of the character described combinin a heater having passages projected there rom, a casing surrounding said heater having a rigid passage terminal por tion continuous. with] thecircumferenceof saidcasing, a second casing within said'first casing divlsional; of two chambers communicativeat their base, said'second casinghaving an offset portion connecting: with said rigid portion of said first casing providing an area-way for-said'heeter passages.

4. A furnace of thecharacter described combining, a sectional; heater comprising an ash pit, fire-box and combustion chamber substantially coaxial, and aregister dome axially eccentric to the aforesaid sections, two concentric circumferential casingsasurrounding said heater, forming-two chambers, an inner and an outer, intercommunicable at their-base, the outer providing'a term-inal for the passages projecting from the heater, and the inner having an offset portion secured to the outer providing-air area way for said passages.

5. A furnace of the character described combining a seetional heater'comprising'an ash-pit, fire-box and combustion chamber substantially coaxial, and a, register (tome axially eccentric to the aforesaid sections, two concentric circumferential casings surrounding said heater, forming two charm bers, an inner and an outer, intercommuniceble at their base, the outer providing 3L terminel for the passages projecting from the heater, and the inner having an ofiset portion secured to the outer providing an area- Way for said passages, and. a register gratmeeeee ing supported. above said chambers dlivisionally connected with said casings.

In Witness thereof, we hereunto subscribe our names, as attested by the two subscrib- 15 ing Witnesses.

WM. J. DOYLE. J. J. WOLLENHAUPT.

Witnesses:

EMMA Sesame,

Lumen A. Bron. 

